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Data Profile: Trucks Involved Fatal Accidents (TIFA)
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Trucks Involved Fatal Accidents (TIFA)
The University of Michigan Transportation Research Institute (UMTRI), Center for National Truck Statistics has conducted an annual national survey on fatal accidents involving medium and heavy trucks since 1980. The resulting data file is called Trucks Involved in Fatal Accidents (TIFA).

The TIFA file is a census of all medium and heavy trucks involved in a fatal accident in the United States. The TIFA database provides coverage of all medium and heavy trucks recorded in the Fatality Analysis Reporting System (FARS) file produced by the National Highway Traffic Safety Administration (NHTSA). TIFA combines vehicle, accident, and occupant records from FARS with information about the physical configuration and operating authority of the truck from the TIFA survey. The combination of the FARS accident level variables with the physical detail of the TIFA survey produces the most detailed account of fatal truck accidents available.
Records of medium and heavy trucks involved in fatal accidents are extracted from the FARS file, and police reports for each accident are acquired. The staff at Center for National Truck Statistics then contacts some knowledgeable person - usually a driver, owner, or safety director - to verify that the vehicle is a truck and to conduct a detailed survey of each truck's physical configuration at the time of the accident.
Trucks with a gross vehicle weight rating of 10,000 pounds or less, primarily pickups, are excluded as nonsample, as are emergency vehicles and other non-trucks.
First Year1993
Last Year1999
   Data Tables
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The data table includes virtually all the variables from the public version of the FARS file: the accident variables, the vehicle variables (for the truck), and the occupant variables (for the driver of the truck). This data is supplemented with a detailed physical description of the truck collected in the TIFA survey. The survey data includes the cab style of the power unit; the weights,lengths, and axle counts of all units; trailer type, cargo body style, cargo type, and cargo weight; and the company type and operating authority of the operator of the vehicle.
   Summary Tables
   National Transportation Statistics
Distribution of Transportation Fatalities by Mode
Injured Persons by Transportation Mode
Median Age of Automobiles and Trucks in Operation in the U.S.
Transportation Accidents by Mode
Transportation Fatalities by Mode
Truck Occupant Safety Data
Truck Profile
U.S. Automobile and Truck Fleets by Use
   Other Tables
Trucks Involved in Fatal Accidents Factbook
   Related Links
FMCSA Information Systems
Federal Motor Carrier Safety Administration
Share the Road Safely
   Data Source and Contacts
Data Provider AgencyUniversity of Michigan Transportation Research Center
Data Provider OfficeCenter for National Truck Statistics
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